st7pmc2s6 STMicroelectronics, st7pmc2s6 Datasheet - Page 49

• Manufacturer Part Number: st7pmc2s6
• Description: 8-bit Mcu For Automotive With Nested Interrupts, Flash, 10-bit Adc, Brushless Motor Control, 5 Timers, Spi, Linsci?
• Manufacturer: STMicroelectronics

ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto
6.5.2
Caution:
Auxiliary voltage detector (AVD)
The voltage detector function (AVD) is based on an analog comparison between a V
and V
voltage is lower than the V
detection (hysteresis).
The output of the AVD comparator is directly readable by the application software through a
real time status bit (AVDF) in the SICSR register. This bit is read only.
The AVD function is active only if the LVD is enabled through the option byte (see
Section 14.1 on page
Monitoring the V
If the AVD interrupt is enabled, an interrupt is generated when the voltage crosses the
V
In the case of a drop in voltage, the AVD interrupt acts as an early warning, allowing
software to shut down safely before the LVD resets the microcontroller. See
The interrupt on the rising edge is used to inform the application that the V
is over.
If the voltage rise time t
selected by option byte), no AVD interrupt is generated when V
If t
IT+(AVD)
rv
is greater than 256 or 4096 cycles then:
If the AVD interrupt is enabled before the V
interrupts are received: the first when the AVDIE bit is set, and the second when the
threshold is reached.
If the AVD interrupt is enabled after the V
AVD interrupt occurs.
IT+(AVD)
or V
IT-(AVD)
reference value and the V
DD
threshold (AVDF bit toggles).
356).
rv
main supply
is less than 256 or 4096 CPU cycles (depending on the reset delay
IT+
reference value for rising voltage in order to avoid parasitic
DD
main supply. The V
IT+(AVD)
IT+(AVD)
threshold is reached then only one
threshold is reached, then two AVD
IT-
IT+(AVD)
reference value for falling
Supply, reset and clock
is reached.
DD
Figure
warning state
14.
IT-(AVD)
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